Std-8 Daily Home Learning Study Youtube /Diksha Portal Video.

The part of the earth we are live on is known as in the lithosphere. Arid are means soil and the mantle means layer. The Earth's upper are crust is made up of the solids such as a clay and the rocks, so it is also known as a solid or a rock layer. This are mantle covers about 29 percent of the earth's in the surface. The crust is about 64 to 100 km thick. It does not a have in the same thickness everywhere. Also, it does not have in the same shape inside or a out. It is a almost made up of the substances like a clay and the rock. On this part there are a small and the big mountains, highlands, plains etc. Also, starting from in the surface, the temperature rises as we go a deeper. The molten sap of the rocks in the earth's crust is called a mag-ya.

There are some gases are inside in the earth, which, when heated, try to get a out by a pushing upwards; But in the pressure of the rocks above is just as a high. Thus, forces like a heat and the pressure help to the balance each other. That is why the earth's crust does not a break. Where this equilibrium is not a maintained, volcanoes erupt with a crust eruptions. “Mommy, how is this softness useful to the us? ‘What can we are build our house on if there is no mulch? How is it possible to the cultivate for a drinking a water or a food, minerals needed for a industry or a business without forests? Come on, let's draw a picture of what might come in the mulch based on what we are talked about the mulch today. ”Activity You can draw and the discuss such a picture with the help of your teacher. Hydrosphere move, let me tell you about in the hydrosphere. The lower part of the earth's surface is surrounded by a water, known as the aquifer. The amount of the water on the earth's surface is a greater than the land area. The aquifer occupies about 71 percent. Oceans are the parts of a body of the water that have a vast reservoirs. Which are known as the Pacific, Atlantic, Indian and the Arctic Oceans. All the oceans are connected to the each other. Local waters adjacent to land are known as seas, bays, gulfs, or a straits. The oceans on a Earth are very wide and deep. In a some places there are trenches as deep as a 10 to 11 km. The bottoms of the oceans are also shaped like in the surface of the earth with a high mountains, vast plains, highlands, valleys, etc. Mom, how much are water will be there be in these seas? It is a salty. Does it help us in any way? Yes, oceans are contain 97 percent of the world's in a water. About a quarter of the remaining water is in the form of the ice on both poles and in the Himalayas and other high mountains. The rest of the water is a stored in some lakes, some rivers, and the some underground. There is a very little potable in a water. This are salt water is the gift of the aquifer. Organisms need a fresh water to the survive. The freshwater main

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Tuesday, June 16, 2020